AN4178

LIN demonstration software

Doc ID 23745 Rev 1

11/13

The following driver modules are used:

●

stm8s_exti.c, for the external interrupts on port E (USER1 and USER2 buttons)

●

stm8s_clk.c, for configuring clocks and enabling HSE

●

stm8s_gpio.c, for initializing, reading and updating all ports

●

stm8s_spi.c, for SPI communication with the L99PM62GXP device

●

stm8s_tim4.c, for generating a 1 ms timebase

●

stm8s_uart3.c, for initializing LINUART

Note:

LINUART is described as UART3 in the RM0016 STM8S and STM8A reference manual.

4.4

Debugging with ST visual develop (STVD)

4.4.1

Downloading the software tools

1.

Download your free software environment (IDE). Choose between:

–

ST’s MCU toolset, composed of ST Visual Develop (STVD) and ST Visual

Programmer (STVP), available at http://www.st.com

–

IAR Embedded Workbench for STM8 30-day time-limited edition, available at

http://www.iar.com, under the “Software Download” tab

2.

Download your free compilers if you chose STVD. While IAR Embedded Workbench for

STM8 includes its own compiler, STVD must be used together with one of the following:

–

Cosmic 32 K 1-year time-limited edition, available at

http://www.cosmicsoftware.com/download_stm8_32k.php

–

Raisonance 32 K, available at http://www.mcu-raisonance.com

4.4.2

Opening the workspace and selecting the correct project

Before opening the workspace, first unzip the zip file delivered with this application note.

1.

In ST Visual Develop, click File / Open Workspace...

2.

Select the stm8a_discover_workspace.stw file in either the “Projects\STVD\cosmic”

folder or the “Projects\STVD\raisonance” folder, depending on the compiler you want to

use.

The workspace contains the following projects:

–

stm8af_discover

–

stm8al_discover

3.

Choose a project by selecting it in the workspace window and right-clicking it with the

mouse. Choose “Set as Active Project”.

4.4.3

Rebuilding and debugging the project

You can rebuild the project, download the code and debug. Make sure to connect the USB

cable to the appropriate board.

Refer to UM1574 STM8A-DISCOVERY User manual for more information about debugging.